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[TheOtherHalf] Create OtherHalf with FM-tuner

asked 2013-12-29 09:52:44 +0300

LaruX gravatar image

updated 2014-01-12 00:55:31 +0300

Based on different discussions in Twitter, Together -community, etc. it seems to be comfirmed that SailfishOS cannot use FM-chip inside Qualcom Snapdragon 400 -soc. (antenna, wiring etc. are the issue)

It has been suggested that special OtherHalf would be built which included FM-tuner.

INFO: This idea topic is based on (off-topic) discussion here

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Great idea indeed! But those components are rather large, arent they?

t0mps0 ( 2013-12-29 10:31:47 +0300 )edit

Totally agree, a fantastic idea, let's do it..

foss4ever ( 2013-12-29 12:56:17 +0300 )edit

If a radio other half would be made then I would vote for making a really awesome receiver that would stand out from the crowd and not just a cheap receiver that doesn't almost pick up any channels. Maybe add a small LCD to the other half too for the radio and a retractable antenna :)

Wizah ( 2013-12-29 16:38:23 +0300 )edit

You may want throw in also some additional bluetooth circuitery, so to avoid having a device with two headphone jacks.

simosagi ( 2013-12-29 18:53:24 +0300 )edit

Would be sweet to have both an FM and a DAB+ reciever in the same TOH. At least in DK many of the FM stations are being phased out in favour of DAB.

Tanghus ( 2013-12-30 01:11:21 +0300 )edit

2 Answers

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answered 2014-01-11 14:25:21 +0300

this post is marked as community wiki

This post is a wiki. Anyone with karma >75 is welcome to improve it.

updated 2014-01-11 14:25:38 +0300

LaruX gravatar image

INFO: I decided to move this answer by Kaacz into answer section. This answer is wiki, so any special karma won't be added to anybody.

@Kaacz answered in the different thread ( like this:

OK. Final info. FM chip exist but without connection anywhere. :( For solution in ToH I found few i2c controled FM receivers. Cheap & all-in-one.

RDA5807M - output right to headphones."

What's missing is the TOH project itself :) We have lately seen promising examples of the projects where early versions of TOHs whith display or keyboard has been developed. What we miss is the FM-TOH project.

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I've found some other all-in-one FMreceiver i2c compatible, sometimes with more functions compared with the proposed TEA and RDA. I'm making a preliminary study about various solutions, about antenna RFIN and what to do with L/Rout 'cause are always proposed to drive a ear/headphone, not good for us

gordon_pcb_designer ( 2014-01-12 16:11:17 +0300 )edit

@gordon_pcb_designer, I saw message sent by you in where you asked about internals of the phone (antennas etc.) in order to know what might be best place for FM antenna in FM-TOH!

It was so nice to see that message ;) I hope that tinkering to get FM-TOH will start as soon as possible ;)

LaruX ( 2014-01-18 17:41:14 +0300 )edit

@LaruX: Nice to read your comment.. at the moment i'm looking for some different solutions and apporaches but i've got 2 big problems:

  1. i'm totally below zero about SW (I2C interface to manage HW)

  2. i'm not sure how and if i can deliver L/R signals to system earphone connector :D

gordon_pcb_designer ( 2014-01-18 18:20:57 +0300 )edit

answered 2014-02-27 16:17:57 +0300

Cyrillin gravatar image

What are last informations about this subject?! It is also very surprising that there are no TuneIn apps ! Is somebody working on it or the priority is for keyboard and other TOH !?


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Many tablet&phone customers would like a radio-receiver and some a transmitter, I guess. Is TOH doing anything? I'll also miss a keyboard and cover for the tablet when it comes in May – looking forward! :-)

vaa ( 2015-04-06 11:27:33 +0300 )edit
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Asked: 2013-12-29 09:52:44 +0300

Seen: 1,227 times

Last updated: Feb 27 '14